io.asyncer.r2dbc.mysql.codec

Interface Codec<T>

Type Parameters:

T - the type that is handled by this codec.

All Known Subinterfaces:

MassiveCodec<T>, MassiveParametrizedCodec<T>, ParametrizedCodec<T>

public interface Codec<T>

Codec to encode and decode values based on MySQL data binary/text protocol.

Use ParametrizedCodec for support ParameterizedType encoding/decoding.

Method Summary

Modifier and Type	Method and Description
boolean	canDecode(MySqlColumnMetadata metadata, Class<?> target) Check if can decode the field value as specified Class.
boolean	canEncode(Object value) Check if can encode the specified value.
T	decode(io.netty.buffer.ByteBuf value, MySqlColumnMetadata metadata, Class<?> target, boolean binary, CodecContext context) Decode a ByteBuf as specified Class.
MySqlParameter	encode(Object value, CodecContext context) Encode a value to a MySqlParameter.

Method Detail

decode

@Nullable
T decode(io.netty.buffer.ByteBuf value,
                   MySqlColumnMetadata metadata,
                   Class<?> target,
                   boolean binary,
                   CodecContext context)

Decode a ByteBuf as specified Class.

Parameters:

value - the ByteBuf.

metadata - the metadata of the column.

target - the specified Class.

binary - if the value should be decoded by binary protocol.

context - the codec context.

Returns:

the decoded result.

canDecode

boolean canDecode(MySqlColumnMetadata metadata,
                  Class<?> target)

Check if can decode the field value as specified Class.

Parameters:

metadata - the metadata of the column.

target - the specified Class.

Returns:

if can decode.

canEncode

boolean canEncode(Object value)

Check if can encode the specified value.

Parameters:

value - the specified value.

Returns:

if can encode.

encode

MySqlParameter encode(Object value,
                      CodecContext context)

Encode a value to a MySqlParameter.

Parameters:

value - the specified value.

context - the codec context.

Returns:

encoded MySqlParameter.